Use quotation marks (") around phrases to search for exact phrases or titles.
This is also handy in Google searching.
Examples:
"health care reform"
"texting while driving"
"As You Like It"
Use truncation (*) to find word variants. Examples:
Adolescen* retrieves the following:
adolescent
adolescents
adolescence
Advertis* retrieves the following:
advertise
advertising
advertisement
Teen* retrieves the following:
Teen
Teens
Teenager
Teenagers
Teenaged